In this study we have studied the lexical semantics of verbs and their projection to both syntanctic structures and word structures. The nobable findings of this study is in the investigation of the projection from Lexical Conceptual Structure to deverbal compounds.In the study on deverbal compounds we have found that the rule/associative memory dichotomy that has been proposed for inflection can be extended to some case of compounding as well ; that is, by using this distinction, we have been able to classify Japanese VC into argument VC and adjuct VC,and account for their different productivity as well as various contrasting behaviors which hitherto have been left unexplained or unnoticed in the existing studies on these compounds.In particular, in regard to the lexical semantics of adjunct/result VCs, it has been found that although this type of VCs appear to have random interpretations, we can analyze them systematically using Lexical Conceptual Sturcture (LCS). Since it is a widely held view that adjunct positions are soecified at the level of LCS ant not argument structure, the semantics of adiunct VCs must be captured at LCS as nominalization of a predicate and modification by the adjunct selected by the predicate. By doing so, we could account for their ambigities as well as their differences from the English VCs by lreferring to different predicates and selected adjuncts kin LCS these VSs are based on.(1)「食べる、eat」等において含意された内項の意味構造における削除(2)動作動詞(走る、run等)において目的地を示す項が意味拡張によって加えられる現象(3)本来受益者役割を選択しない動詞が意味拡張によって与格によってそれを表す現象